Add basic docker support for development

Assuming docker engine is installed, it is now possible to run the dev
server using 'docker-compose up --build' or run the production version using
'docker build -t bitburner . && docker run -it -p 8000:80 bitburner'.

.dockerignore

@@ -0,0 +1,14 @@
+node_modules/
+
+.git
+.gitattributes
+.gitignore
+.editorconfig
+
+.dockerignore
+Dockerfile
+docker-compose.yml
+
+*.md
+Quotes.txt
+netscript_tests/